<template>
    <div class="app-header-sticky" :class="{show:y>=78}">
        <div class="container" v-show="y>=78">
            <RouterLink class="logo" to="/" />
            <AppHeaderNav />
            <div class="right">
                <RouterLink to="/">品牌</RouterLink>
                <RouterLink to="/">专题</RouterLink>
            </div>
        </div>
    </div>
</template>

<script>
// import { onMounted, ref } from 'vue'
import AppHeaderNav from './app-header-nav';
import { useWindowScroll } from '@vueuse/core';
export default {
    name: 'AppHeaderSticky',
    components: { AppHeaderNav },
    setup() {
        // const y =ref(0)
        // onMounted(() => {
        //     window.onscroll = () => {
        //         const scrollTop = document.documentElement.scrollTop
        //         y.value = scrollTop
        //     }
        // })
        const { y } = useWindowScroll()
        // 提供y给模板
        return { y }
    }
}
</script>

<style lang="less" scoped>
.app-header-sticky {
  width: 100%;
  height: 80px;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 999;
  background-color: #fff;
  border-bottom: 1px solid #e4e4e4;
  transform: translateY(-100%);
  opacity: 0;
  &.show {
    transition: all 0.3s linear;
    transform: none;
    opacity: 1;
  }
  .container {
    display: flex;
    align-items: center;
  }
  .logo {
    width: 200px;
    height: 80px;
    background: url(../assets/images/logo.png) no-repeat  right 2px;
    background-size: 160px auto;
  }
  .right {
    width: 220px;
    display: flex;
    text-align: center;
    padding-left: 40px;
    border-left: 2px solid @xtxColor;
    a {
      width: 38px;
      margin-right: 40px;
      font-size: 16px;
      line-height: 1;
      &:hover {
        color: @xtxColor;
      }
    }
  }
}
</style>